rosapps/templates/mdi/childwnd.c

   1 /*
   2  *  ReactOS Application MDI Child Window
   3  *
   4  *  childwnd.c
   5  *
   6  *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #ifdef _MSC_VER
  24 #include "stdafx.h"
  25 #else
  26 #define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
  27 #include <windows.h>
  28 #include <commctrl.h>
  29 #include <stdlib.h>
  30 #include <malloc.h>
  31 #include <memory.h>
  32 #include <tchar.h>
  33 #include <process.h>
  34 #include <stdio.h>
  35 #endif
  36
  37 #include <assert.h>
  38 #define ASSERT assert
  39
  40 #include "main.h"
  41 #include "childwnd.h"
  42
  43 ////////////////////////////////////////////////////////////////////////////////
  44
  45 static void draw_splitbar(HWND hWnd, int x)
  46 {
  47     RECT rt;
  48     HDC hdc = GetDC(hWnd);
  49
  50     GetClientRect(hWnd, &rt);
  51     rt.left = x - SPLIT_WIDTH/2;
  52     rt.right = x + SPLIT_WIDTH/2+1;
  53     InvertRect(hdc, &rt);
  54     ReleaseDC(hWnd, hdc);
  55 }
  56
  57 static void OnPaint(HWND hWnd, ChildWnd* pChildWnd)
  58 {
  59     PAINTSTRUCT ps;
  60     RECT rt;
  61     GetClientRect(hWnd, &rt);
  62     BeginPaint(hWnd, &ps);
  63
  64 //    lastBrush = SelectObject(ps.hdc, (HBRUSH)GetStockObject(WHITE_BRUSH));
  65 //    Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
  66 //    SelectObject(ps.hdc, lastBrush);
  67 //    rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
  68     FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
  69 /*
  70     rt.left = pChildWnd->nSplitPos-SPLIT_WIDTH/2;
  71     rt.right = pChildWnd->nSplitPos+SPLIT_WIDTH/2+1;
  72     lastBrush = SelectBrush(ps.hdc, (HBRUSH)GetStockObject(COLOR_SPLITBAR));
  73     Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
  74     SelectObject(ps.hdc, lastBrush);
  75 #ifdef _NO_EXTENSIONS
  76     rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
  77     FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
  78 #endif
  79  */
  80     EndPaint(hWnd, &ps);
  81 }
  82
  83
  84 static void OnSize(ChildWnd* pChildWnd, WPARAM wParam, LPARAM lParam)
  85 {
  86     if (wParam != SIZE_MINIMIZED) {
  87         //resize_tree(pChildWnd, LOWORD(lParam), HIWORD(lParam));
  88     }
  89 }
  90
  91 //
  92 //  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
  93 //
  94 //  PURPOSE:  Processes messages for the child windows.
  95 //
  96 //  WM_COMMAND  - process the application menu
  97 //  WM_PAINT    - Paint the main window
  98 //  WM_DESTROY  - post a quit message and return
  99 //
 100 //
 101 LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 102 {
 103     static int last_split;
 104     ChildWnd* pChildWnd = (ChildWnd*)GetWindowLong(hWnd, GWL_USERDATA);
 105     ASSERT(pChildWnd);
 106
 107     switch(message) {
 108     case WM_CREATE:
 109         return 0;
 110
 111     case WM_MDIACTIVATE: // set an alternate menu here
 112         if (lParam == (LPARAM)hWnd) {
 113         } else {
 114         }
 115         DrawMenuBar(hFrameWnd);
 116         // return 0;
 117         break;
 118
 119     case WM_PAINT:
 120         OnPaint(hWnd, pChildWnd);
 121         return 0;
 122
 123     case WM_NCDESTROY:
 124         // SetWindowLong(hWnd, GWL_USERDATA, 0);
 125         break;
 126
 127     case WM_SETCURSOR:
 128         if (LOWORD(lParam) == HTCLIENT) {
 129             POINT pt;
 130             GetCursorPos(&pt);
 131             ScreenToClient(hWnd, &pt);
 132
 133             if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 134                 SetCursor(LoadCursor(0, IDC_SIZEWE));
 135                 return TRUE;
 136             }
 137         }
 138         //goto def;
 139         break;
 140
 141     case WM_LBUTTONDOWN: {
 142         RECT rt;
 143         int x = LOWORD(lParam);
 144         GetClientRect(hWnd, &rt);
 145         if (x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 146             last_split = pChildWnd->nSplitPos;
 147 #ifdef _NO_EXTENSIONS
 148             draw_splitbar(hWnd, last_split);
 149 #endif
 150             SetCapture(hWnd);
 151     }
 152     break;}
 153
 154     case WM_LBUTTONUP:
 155         if (GetCapture() == hWnd) {
 156 #ifdef _NO_EXTENSIONS
 157             RECT rt;
 158             int x = LOWORD(lParam);
 159             draw_splitbar(hWnd, last_split);
 160             last_split = -1;
 161             GetClientRect(hWnd, &rt);
 162             pChildWnd->nSplitPos = x;
 163             //resize_tree(pChildWnd, rt.right, rt.bottom);
 164 #endif
 165             ReleaseCapture();
 166     }
 167     break;
 168
 169 #ifdef _NO_EXTENSIONS
 170        case WM_CAPTURECHANGED:
 171         if (GetCapture()==hWnd && last_split>=0)
 172             draw_splitbar(hWnd, last_split);
 173         break;
 174 #endif
 175     case WM_KEYDOWN:
 176         if (wParam == VK_ESCAPE)
 177             if (GetCapture() == hWnd) {
 178                 RECT rt;
 179 #ifdef _NO_EXTENSIONS
 180                 draw_splitbar(hWnd, last_split);
 181 #else
 182                 pChildWnd->nSplitPos = last_split;
 183 #endif
 184                 GetClientRect(hWnd, &rt);
 185                 //resize_tree(pChildWnd, rt.right, rt.bottom);
 186                 last_split = -1;
 187                 ReleaseCapture();
 188                    SetCursor(LoadCursor(0, IDC_ARROW));
 189         }
 190     break;
 191
 192     case WM_MOUSEMOVE:
 193         if (GetCapture() == hWnd) {
 194             RECT rt;
 195                int x = LOWORD(lParam);
 196 #ifdef _NO_EXTENSIONS
 197             HDC hdc = GetDC(hWnd);
 198             GetClientRect(hWnd, &rt);
 199             rt.left = last_split-SPLIT_WIDTH/2;
 200             rt.right = last_split+SPLIT_WIDTH/2+1;
 201                InvertRect(hdc, &rt);
 202             last_split = x;
 203             rt.left = x-SPLIT_WIDTH/2;
 204             rt.right = x+SPLIT_WIDTH/2+1;
 205             InvertRect(hdc, &rt);
 206             ReleaseDC(hWnd, hdc);
 207 #else
 208                GetClientRect(hWnd, &rt);
 209             if (x>=0 && x<rt.right) {
 210                 pChildWnd->nSplitPos = x;
 211                 resize_tree(pChildWnd, rt.right, rt.bottom);
 212                    rt.left = x-SPLIT_WIDTH/2;
 213                    rt.right = x+SPLIT_WIDTH/2+1;
 214                 InvalidateRect(hWnd, &rt, FALSE);
 215                 UpdateWindow(pChildWnd->left.hWnd);
 216                 UpdateWindow(hWnd);
 217                 UpdateWindow(pChildWnd->right.hWnd);
 218             }
 219 #endif
 220     }
 221     break;
 222
 223 #ifndef _NO_EXTENSIONS
 224        case WM_GETMINMAXINFO:
 225         DefMDIChildProc(hWnd, message, wParam, lParam);
 226         {LPMINMAXINFO lpmmi = (LPMINMAXINFO)lParam;
 227            lpmmi->ptMaxTrackSize.x <<= 1;//2*GetSystemMetrics(SM_CXSCREEN) / SM_CXVIRTUALSCREEN
 228         lpmmi->ptMaxTrackSize.y <<= 1;//2*GetSystemMetrics(SM_CYSCREEN) / SM_CYVIRTUALSCREEN
 229         break;}
 230 #endif
 231
 232        case WM_SETFOCUS:
 233         SetCurrentDirectory(pChildWnd->szPath);
 234         SetFocus(pChildWnd->nFocusPanel? pChildWnd->hRightWnd: pChildWnd->hLeftWnd);
 235         break;
 236 /*
 237     case WM_COMMAND:
 238         pane = GetFocus()==pChildWnd->left.hWnd? &pChildWnd->left: &pChildWnd->right;
 239         switch(LOWORD(wParam)) {
 240         case ID_WINDOW_NEW_WINDOW:
 241             return 0;
 242         default:
 243             return pane_command(pane, LOWORD(wParam));
 244             break;
 245         }
 246         break;
 247  */
 248        case WM_SIZE:
 249         if (wParam != SIZE_MINIMIZED) {
 250             OnSize(pChildWnd, wParam, lParam);
 251         }
 252         // fall through
 253     // default: def:
 254         return DefMDIChildProc(hWnd, message, wParam, lParam);
 255     }
 256     return DefMDIChildProc(hWnd, message, wParam, lParam);
 257 }